The point at which photovoltaic electricity is equal to or cheaper than grid power, is achieved first in areas with abundant sun and high costs for electricity such as in California and Japan. Grid parity has been reached in Hawaii and other islands that otherwise use diesel fuel to produce electricity.
Source: Wikipedia
URL: http://en.wikipedia.org/wiki/Photovoltaics
Source: Wikipedia
URL: http://en.wikipedia.org/wiki/Photovoltaics
